Hardiness
H4 Hardy — average winter (to −5 to −10°C)
Height × Spread
15–45 cm × 10–50 cm
Soil
fertile, moisture retentive, but well-drained soil
Toxicity
No specific toxicity is listed by the RHS. This is not a guarantee of safety — check with a vet or the ASPCA before pets or children eat any plant.